wenzelm [Mon, 26 Mar 2012 20:42:00 +0200] rev 47121
more precise treatment of \r\n as blank symbol (cf. 2bf29095d26f), e.g. relevant for loading theory headers in Isabelle/jEdit -- NB: jEdit and Isabelle/ML normalize newline variants to \n, but Isabelle/Scala retains them literally;